Equivalent & Substitute Parts for URZ1A331MPD1TD

Part Overview

The URZ1A331MPD1TD is a 330 µF, 10 V aluminum electrolytic capacitor in radial, can package manufactured by Nichicon. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part is rated for 1000 hours at 105°C and is suitable for general-purpose applications requiring through-hole mounting.

Substiute Parts

URZ1A331MPD1TD

NichiconIn Stock: 1183URZ1A331MPD1TD Datasheet

Current PartRFQ

ECA-1CHG331

Panasonic Electronic ComponentsIn Stock: 9927ECA-1CHG331 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the URZ1A331MPD1TD is determined by the following critical parameters:

• Capacitance Value: 330 µF (exact match required)
• Voltage Rating: Minimum 10 V (equal or higher voltage rating is acceptable)
• Tolerance: ±20% (standard tolerance for aluminum electrolytic capacitors)
• Package Type: Radial, Can with through-hole mounting
• Lead Spacing: 0.138" (4.60 mm)
• Physical Dimensions: Compatible with 0.315" diameter and height constraints
• Thermal Rating: 1000 Hrs @ 105°C minimum
• Operating Temperature: -55°C ~ 105°C
• Polarization: Polar (required for electrolytic type)

The ECA-1CHG331 qualifies as a direct substitute based on matching capacitance, tolerance, package geometry, lead spacing, thermal rating, and operating temperature range. The higher voltage rating (16 V vs. 10 V) provides additional design margin and is permissible in applications designed for 10 V operation.

Parameter Comparison

Engineering Selection Recommendations

The ECA-1CHG331 is the qualified substitute for the obsolete URZ1A331MPD1TD. Selection is based on:

• Product Status: The ECA-1CHG331 is active and in production, ensuring long-term availability and supply chain continuity.
• Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements.
• Electrical Compatibility: Identical capacitance (330 µF), tolerance (±20%), and thermal rating (1000 Hrs @ 105°C) ensure functional equivalence.
• Mechanical Compatibility: Matching lead spacing (0.138" / 4.60 mm) and diameter (0.315" / 8.00 mm) permit direct PCB footprint compatibility.
• Voltage Margin: The 16 V rating of the substitute provides additional voltage headroom compared to the 10 V original specification.
• Physical Height Consideration: The substitute has a maximum seated height of 0.492" (12.50 mm) versus 0.413" (10.50 mm) for the original. Verify clearance in the target application before implementation.

Frequently Asked Questions (FAQ)

Q: Can the ECA-1CHG331 be used as a direct replacement for the URZ1A331MPD1TD?

A: Yes. The ECA-1CHG331 matches the critical electrical parameters (capacitance, tolerance, thermal rating, operating temperature) and mechanical parameters (lead spacing, diameter, package type) required for substitution. The higher voltage rating (16 V) is acceptable in 10 V applications.

Q: What is the primary difference between these two parts?

A: The main differences are manufacturer (Nichicon vs. Panasonic), product status (obsolete vs. active), voltage rating (10 V vs. 16 V), and maximum seated height (10.50 mm vs. 12.50 mm). The electrical performance and capacitance value are identical.

Q: Does the height difference affect PCB layout?

A: The substitute is 0.079" (2.00 mm) taller. Verify that the application PCB has sufficient vertical clearance above the capacitor location. If space is constrained, confirm that the additional height does not interfere with adjacent components or enclosure geometry.

Q: Are there any compliance concerns with using the substitute?

A: No. Both parts are ROHS3 compliant and REACH unaffected, meeting standard regulatory requirements for electronic components.

Q: What is the ripple current rating difference?

A: The URZ1A331MPD1TD is rated for 210 mA @ 120 Hz and 315 mA @ 10 kHz. The ECA-1CHG331 is rated for 260 mA @ 120 Hz and 390 mA @ 100 kHz. The substitute supports higher ripple current, providing additional design margin.

Q: Is the lead spacing identical between the two parts?

A: Yes. Both parts have a lead spacing of 0.138" (4.60 mm), ensuring PCB footprint compatibility without modification.